| 摘要 |
<p>The present invention relates to a smoke control system. The smoke control system is capable of increasing or decreasing the air supply amount of an air blower by increasing or decreasing the RPM of the air blower or by controlling the opening angle of an air volume control damper installed at the front side of the inlet of the air blower, so outdoor air with a leakage amount or a supplement amount to maintain an air egress velocity at a predetermined reference is supplied to an ancillary room in each floor of a high-rise building based on a differential pressure in the ancillary room in each floor or based on a differential pressure on each installation position of a differential sensor, wherein the differential sensors are installed in at least three of the different ancillary rooms in the high-rise building or are installed on at least three of the different installation positions of an air blow line in the high-rise building. When using at least three of the differential sensors, the smoke exhaustion system according to the present invention is capable of quickly and accurately detecting a differential pressure variation in the ancillary room or in the air blow line, thereby accurately identifying both of whether or not an entrance door in the ancillary room in the high-rise building is opened and whether or not the entrance door is temporarily opened and closed again. As a result, the smoke exhaustion system according to the present invention is capable of precisely controlling the leakage amount and the supplement amount of the outdoor air supplied to the ancillary room by precisely and accurately controlling the air supply amount of the air blower, so the minimum differential pressure in each of the ancillary rooms can be stably maintained to prevent smoke from flowing into the ancillary room through the entrance door between the ancillary room and the indoor side of the high-rise building and so the maximum differential pressure in each of the ancillary rooms can be stably maintained to allow a person in the indoor side of the high-rise building in fire to open the entrance door in order to prevent a fatal accident due to suffocation, burn, etc.</p> |
